212012102118191 has 2 divisors, whose sum is σ = 212012102118192. Its totient is φ = 212012102118190.

The previous prime is 212012102118143. The next prime is 212012102118241. The reversal of 212012102118191 is 191811201210212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212012102118191 - 2³⁴ = 211994922249007 is a prime.

It is a super-2 number, since 2×212012102118191² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212012102138191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006051059095 + 106006051059096.

It is an arithmetic number, because the mean of its divisors is an integer number (106006051059096).

Almost surely, 2^{212012102118191} is an apocalyptic number.

212012102118191 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012102118191 is an equidigital number, since it uses as much as digits as its factorization.

212012102118191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 32.

The spelling of 212012102118191 in words is "two hundred twelve trillion, twelve billion, one hundred two million, one hundred eighteen thousand, one hundred ninety-one".